WASHINGTON (AFP) ― President Barack Obama will on Tuesday seek to “turn the tide” in the Ebola epidemic by ordering 3,000 U.S. military personnel to West Africa and launching a major health care training and hygiene program.

The White House said Obama will travel to the Centers for Disease Control and Prevention in Atlanta to meet U.S. health chiefs and make the announcement, meant to spur a global effort to fight an outbreak that has already killed 2,400 people.

The announcement comes amid increasing alarm about the worst-ever outbreak of the disease which has spread through Liberia, Sierra Leone, Nigeria and the Democratic Republic of Congo.

Most of the new U.S. effort will be concentrated in impoverished Liberia ― the most badly affected nation.

Obama will announce that U.S. Africa Command will set up a headquarters in Monrovia to act as a regional command and control center to coordinate U.S. military and international relief programs. The effort will involve an estimated 3,000 American military personnel, senior officials said. Many of the forces will be positioned at a staging base to expedite the transit of equipment and personnel.

U.S. advisers will also train up to 500 health care providers per week in Liberia, in a bid to improve the direct medical care and the crippled health infrastructure in the country.

In addition, Washington will send 65 public health service corps to Liberia to manage and staff a previously announced U.S. military hospital to care for health workers who become sick with Ebola.

The United States will also, working in partnership with the United Nations Children‘s Fund, immediately send Ebola prevention kits, including disinfectant and advice to 400,000 of the most vulnerable families in Liberia.

“What is clear is in order to combat and contain the outbreak at its source, we need to partner and lead an international response,” said one senior U.S. official, on condition of anonymity.